Please educate me. If not slavery, what was the cause of the Civil War? You are correct in one aspect, though. Schools have pretty much ceased to exist in America, now we have indoctrination centers. Centers that try to revise history to make us believe that slavery was not the cause of the Civil War. It's okay, though because books that were written at the time of the Civil War, by people who were there and knew what was what still exist. You can read them and know without a shadow of a doubt that the people who fought the Civil War knew what they were fighting about and fighting for. Here's a revelation, it wasn't what revisionist historians want you to believe.